Tire-deflater.



H- L. PERRYMAN.

TIRE DEFLATER.

APPLICATION FILED APII.20. I9I4.

Patented July 6, 1915.

Guam

l vi/Weoow M IX 4 HENRY L. PERRYMAN, OF JACKSONVILLE, FLORIDA.

TIRE-DEFLATER.

Specification of Letters Patent. P t t July 1915,

Application filed April 20, 1914. Serial No. 833,020.

To all whom it may concern:

Be it known that I, HENRY L. PERRYMAN, a citizen of the United States, residing at Jacksonville, in the county of Duval and State of Florida, have invented certain new and useful Improvements in TireDeflaters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to tire deflaters or I devices for opening and holding open the valve of a pneumatic tire to permit the air to escape therefrom.

The object of the invention is to provide a very simple, compact device which can be readily slipped onto and off of the nipple of a valve tube and whichwill frictionally engage the tube to retain the device thereon and hold the valve open; further, to provide such a device which will be .of a smooth, reg.- ular' exterior having no projecting parts, whereby it can be conveniently carried in the pocket or on the end of a pencil; and further, to provide a device of this kind which can be manufactured and placed on the market at a low cost.

In the accompanying drawings, Figure 1 is a side elevation of, a section of a pneumatic tire showing a valve tube with a deflater applied thereto; Fig. 2 is a longitudinal, sectional view ofa nortion'of the valve tube and of the deflater; and Fig. 3 is a.

perspective, sectional view of the defiater.

My invention consists in an annular 0rcylindrical body of resilient material, the body being preferably split along one side to permit of the expansion and contraction thereof and enable it to be slipped onto'the nipple of the'valve tube and to be retained thereon by the friction due to the contraction of the body. Carried by this resilient body is a plunger or stud which is spaced away from thecircumferential wall thereof and arranged to enter the valve tube, engage the valve stem to open the valve and to hold the same open so long as the device remains upon the valve tube.

The device may take various forms as to its details of construction and in the accompanying drawings I have illustrated one embodiment of the same in which I have shown it as comprising a cylindrical body. portion 1 of resilient metal having Its oneend open, as indicated at 2, and its other end closed, as at 3. This cylindrical body portion is split longitudinally from the open end thereof to a point near the closed end thereof, as mdlcated at 4, and is preferably provided with one or more openings 5,

through which theair may escape. The in ternal diameter of the cylindrical body portion is slightly less than the external diameter of the end portion or nipple 6 of a standard valve tube 7. Consequently, when the cylindrical body portion is forced onto this nipple it is expanded and the metal is caused to grip the nipple, thus retaining the defiater on the tube. The edge of the cylinder at the open end thereof is preferably turned outwardly and upwardly, as shown at 8, to form a rib which stiffens the end of the cylinder and increases its gripping powers. A plunger or stud 9 is carried by the cylinder, has its end spaced away from the circumferential wall thereof and is so arranged With relation to the open end of the cylinder that when the cylinder is placed upon the nipple of the valve tube,,the plunger will engage the end of the stem 10 of the valve 11 mounted within the tube'and move the valve to its open position. The stud 9 may be mounted in the cylinder in any suitable manner. In the present embodiment of the device it is shown as secured to the closed end 3 of the cylinder. To this end the stud is provided with an enlarged portion 12 which fits snuglv in the cvlindrical body portion against the closed end 3 thereof and beyond the opening 5. This enlarged portion has a lug 13 which constitutes a rivet and extends through an opening 14 in the closed end of the cylinderand when this lug has been upset the stud is firmly secured within the cylindrical body portion of the deflater.

The operation of the device willbe readily understood from the foregoing description and it will be apparent thatthe device itself is of a very simple structure, compris ing but two parts, and these parts being rigidly secured one to the other; that the ex teriorcontour of the device is smooth and without projections of .any kind, "thus enabling it to be carried in the pocket or about the person without inconvenience; and further, that the device may be produced at a very low cost.

While I have shown and described one embodiment of the invention it will be understood that this has been chosen for the purdesire to be limited'to the details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A device of the character described comprising a split cylinder having one end open and the other end closed and a stud mounted within said. cylinder and having the end adjacent the open end of said cyl-' inder spaced away from, the circumferential walls thereof, said stud having an enlarged portion which fits within said cylinder and against the closed end thereof.

2. A device of the character described comprising a cylinder open at one end, closed at the other end, split longitudinally thereof at its open end and having openings between the ends thereof, and a stud mounted within 20 said cylinder and spaced away from the cir- 

